Upstart digital music distributor DistroKid has launched Vault, offering unlimited free audio file backups to its users. The Vault provides backups and downloads of all uploads, including the 1.5 million tracks already uploaded to DistroKid.

But like their “Leave A Legacy” feature, which offers distribution forever (as in, even after you die) for a one time fee of $29 a track or $49 an album, or the ability to automatically split payments amongst collaborators, Vault is the kind of smart add-on that gives a small but very nimble startup like Distrokid a competitive advantage in a crowded sector.